Journal Article

Author

Wormald, E. G.

Title

A telephone traffic distribution recording project [Summary of papers to be published in Transactions]

In

Journal of the Institution of Engineers, Australia

Imprint

vol. 31, no. 3, Mar 1959, p. 84

Description

Summary of paper to be published in the "Electrical and Mechanical Engineering Transactions" May 1959.

Abstract

Sydney and Melbourne Metropolitan Telephone Networks are among the largest in the world still using step-by-step switching. The next few years will probably see major changes in the arrangement of these networks and the introduction of new, more flexible types of switching equipment. Planning for these developments has suffered from a lack of basic information about the ultimate destination of traffic originating in each exchange in the network. Such information is more or less directly available from many of the more sophisticated types of switching equipment employed in other countries. Here, except in a relatively small number of special cases, it has been possible only to record the total traffic on junction line routes carrying a mixture of calls to a variety of destinations.

The paper deals with a method of recording the components of such mixtures, as identified from the digits dialled in setting up the calls. After outlining the background to and reasons for the project, some of the ways in which the required information could be derived are examined and compared. The design which was developed for the recording apparatus is described, with a fair amount of detail concerning some of its more interesting aspects. The equipment is semi-portable, and uses largely telephone-type components to automatically record dialling and holding time information about large samples of the traffic originating in an exchange.

Related Published resources

isRelated

• Wormald, E. G., 'A telephone traffic distribution recording project', Electrical and Mechanical Engineering Transactions, EM1 (1959), 24-. Details